Magic constant

Reports expressions that can be replaced with "magic" constants.

Example 1:

  // Bare literal "2" is used, warning:
  Font font = new Font("Arial", 2)

Example 2:

  // Predefined constant is used, good:
  Font font = new Font("Arial", Font.ITALIC)

When possible, the quick-fix inserts an appropriate predefined constant.

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

MagicConstant

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Java | Probable bugs

The behavior of this inspection is controlled by org.intellij.lang.annotations.MagicConstant annotation. Some standard Java library methods are pre-annotated, but you can use this annotation in your code as well.

Inspection Details
By default bundled with:	IntelliJ IDEA 2024.3, Qodana for JVM 2024.3,
Can be installed with plugin:	Java, 243.23126

Last modified: 03 December 2024